HD 214983

HD 214983
HD 214983
Classe spettraleM4III
Distanza dal Sole1337 anni luce
CostellazioneAquario
Coordinate
(all'epoca J2000.0)
Ascensione retta22h 42m 06,0261s
Declinazione-05° 06′ 07,086″
Lat. galattica-52,1442°
Long. galattica062,6918°
Dati fisici
Raggio medio94 R
Temperatura
superficiale
  • 3390 K (media)
Luminosità
1043 L
Dati osservativi
Magnitudine app.6,5
Magnitudine ass.-1,56
Parallasse2,44 ± 1,12 mas
Moto proprioAR: 68,82 ± 1,20 mas/anno
Dec: -53,26 ± 0,80 mas/anno
Nomenclature alternative
GSC 05240-01568, 2MASS J22420602-0506070, TYC 5240-1568-1, BD -05 5843, HD 214983, PPM 206663, YZ 95 8089, BDS 11907 A, HIC 112078, RAFGL 2935, YZ 0 4111, CCDM J22421-0507A, HIP 112078, SAO 146251, AAVSO 2236-05, CSI -05 5843 1, IDS 22369-0538 A, GC 31678, IRC -10585, SRS 17581

HD 214983, nota anche come LP Aquarii, è una stella di colore rosso e di magnitudine 6,5 situata nella costellazione dell'Aquario. Dista 1337 anni luce dal sistema solare.

Osservazione

Si tratta di una stella situata nell'emisfero celeste australe, ma molto in prossimità dell'equatore celeste; ciò comporta che possa essere osservata da tutte le regioni abitate della Terra senza alcuna difficoltà e che sia invisibile soltanto molto oltre il circolo polare artico. Nell'emisfero sud invece appare circumpolare solo nelle aree più interne del continente antartico. Essendo di magnitudine pari a 6,5, non è osservabile ad occhio nudo; per poterla scorgere è sufficiente comunque anche un binocolo di piccole dimensioni, a patto di avere a disposizione un cielo buio.

Il periodo migliore per la sua osservazione nel cielo serale ricade nei mesi compresi fra fine agosto e dicembre; da entrambi gli emisferi il periodo di visibilità rimane indicativamente lo stesso, grazie alla posizione della stella non lontana dall'equatore celeste.

Sistema stellare

HD 214983 ha diverse stelle visualmente nei suoi pressi: una stella di magnitudine di magnitudine 9,7, separata da 75,1 secondi d'arco, un'altra di magnitudine 10,3, denominata D o Ab, separata da 162,4 secondi d'arco da A e una di magnitudine 7,3, separata da 0,1 secondi d'arco con angolo di posizione di 354 gradi, la quale, data la vicinanza, potrebbe essere gravitazionalmente legata alla principale, anche se tramite interferometria speckle ciò on è mai stato confermato. Le altre stelle visualmente più distanti invece sono solo situate sulla linea di vista con la Terra.[1]

Note

Voci correlate

Collegamenti esterni

  Portale Stelle: accedi alle voci di Wikipedia che trattano di stelle e costellazioni

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